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Leucorrhinia patricia (Canada Whiteface)BC conservation rank: S4. Yellow List. Northern surveys have increased the number of records of this uncommon, peatland obligate; consequently in 2004 it was removed from the Blue List where it was originally placed.Description: Tiny and slender with a mostly black abdomen. The top of the male's abdomen is usually unmarked behind segment 3; if any marks are present, they are red streaks on segments 1 to 5. Females have larger yellow marks on segments 1 to 6 (and sometimes a streak on segment 7). Hamule, fig. 16c; vulvar lamina, fig. 17c. Length: male 27 mm, female 25 mm. Global range: Alaska, Yukon and Northwest Territories east to Nova Scotia, south to southern Quebec, northern Ontario, the northern Prairie Provinces and central British Columbia (Catling et al. 2005) BC Distribution: Central and northern BC, but not found west of the Coast Mountains. The southernmost record is from Heckman Pass in the western Chilcotin where Highway 20 passes through the Coast Mountains. There are no records east of the Rockies in BC as yet, but L. patricia will undoubtedly be found there. Biology: Flies alongside its close relative, the larger and redder Hudsonian Whiteface, but is much less common. Rare in the southern parts of its range. Restricted to peatland waters with mats of aquatic moss floating on or near the surface (e.g., Wf06-08; Wb13). BC flight period: mid June to late August; all records lie between early July and mid August.
Leucorrhinia patricia Map 3. Frequency of records in British Columbia by NTS 1/50,000 mapsheet. |
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